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'use strict';
import H from '../parts/Globals.js';
import '../parts/Series.js';
var Series = H.Series,
addEvent = H.addEvent,
noop = H.noop;
/* ************************************************************************** *
*
* DERIVED SERIES MIXIN
*
* ************************************************************************** */
/**
* Provides methods for auto setting/updating series data based on the based
* series data.
*
* @private
* @mixin derivedSeriesMixin
*/
var derivedSeriesMixin = {
hasDerivedData: true,
/**
* Initialise series
*
* @private
* @function derivedSeriesMixin.init
*/
init: function () {
Series.prototype.init.apply(this, arguments);
this.initialised = false;
this.baseSeries = null;
this.eventRemovers = [];
this.addEvents();
},
/**
* Method to be implemented - inside the method the series has already
* access to the base series via m `this.baseSeries` and the bases data is
* initialised. It should return data in the format accepted by
* `Series.setData()` method
*
* @private
* @function derivedSeriesMixin.setDerivedData
*
* @return {Array<*>}
* An array of data
*/
setDerivedData: noop,
/**
* Sets base series for the series
*
* @private
* @function derivedSeriesMixin.setBaseSeries
*/
setBaseSeries: function () {
var chart = this.chart,
baseSeriesOptions = this.options.baseSeries,
baseSeries = (
H.defined(baseSeriesOptions) &&
(
chart.series[baseSeriesOptions] ||
chart.get(baseSeriesOptions)
)
);
this.baseSeries = baseSeries || null;
},
/**
* Adds events for the series
*
* @private
* @function derivedSeriesMixin.addEvents
*/
addEvents: function () {
var derivedSeries = this,
chartSeriesLinked;
chartSeriesLinked = addEvent(
this.chart,
'afterLinkSeries',
function () {
derivedSeries.setBaseSeries();
if (derivedSeries.baseSeries && !derivedSeries.initialised) {
derivedSeries.setDerivedData();
derivedSeries.addBaseSeriesEvents();
derivedSeries.initialised = true;
}
}
);
this.eventRemovers.push(
chartSeriesLinked
);
},
/**
* Adds events to the base series - it required for recalculating the data
* in the series if the base series is updated / removed / etc.
*
* @private
* @function derivedSeriesMixin.addBaseSeriesEvents
*/
addBaseSeriesEvents: function () {
var derivedSeries = this,
updatedDataRemover,
destroyRemover;
updatedDataRemover = addEvent(
derivedSeries.baseSeries,
'updatedData',
function () {
derivedSeries.setDerivedData();
}
);
destroyRemover = addEvent(
derivedSeries.baseSeries,
'destroy',
function () {
derivedSeries.baseSeries = null;
derivedSeries.initialised = false;
}
);
derivedSeries.eventRemovers.push(
updatedDataRemover,
destroyRemover
);
},
/**
* Destroys the series
*
* @private
* @function derivedSeriesMixin.destroy
*/
destroy: function () {
this.eventRemovers.forEach(function (remover) {
remover();
});
Series.prototype.destroy.apply(this, arguments);
}
};
export default derivedSeriesMixin;